Just as suspected, which confuses me even more now
Tests done at 43.5psi and 100% duty cycle, so this is the max
P, i remember you said before the stocks were 20lb...NO, sorry.
Stock focus injectors came back from RC and flowed 190cc, which is 18.1 lb/hr
The green injectors from ford, labelled 20lb(off a stock euro contour i believe), flowed 210cc, which is 20.0 lb/hr
SO....this means that theres something special about this car because at 173whp, nader's car went down to low 12:1 a/f all the way to 7500rpm with the green, 20lb/hr injectors
Every formula i use and do, even at the extremes, says NO way will they support that power, at least 25lb injectors are necessary.
Does this mean the car is just runing at over 100% duty cycle?
For this to work, the formula gives me a BSFC of about .35, which should be impossible on a NA car, it has to be around .45-.50
Guys, WTF is going on? How is the car possibly getting enough fuel? I will be testing my duty cycle today finally with the scanner.
His car also hit 4.15volts, so theres plenty of MAfS to go, but it seems like the car is somehow sqeezing more fuel through those injectors then physically possible.
Anyone have any idea as far as whats going on? Is it possible for the computer to run the injectors at more than 100% duty cycle?
The formula does say however that if you run it at 110% duty cycle, with pressure of 43psi(what is the stock fuel presure at the rail BTW??) it will only need 20.3lb/hr injectors to support 170whp
So is the ecu just forcing more than 100% duty cycle through the injectors?? If so, how bad is that?
WHAT IS THE PSI at the fuel rail on a focus???
[ 10-18-2002, 03:50 PM: Message edited by: nazthug ]
Tests done at 43.5psi and 100% duty cycle, so this is the max
P, i remember you said before the stocks were 20lb...NO, sorry.
Stock focus injectors came back from RC and flowed 190cc, which is 18.1 lb/hr
The green injectors from ford, labelled 20lb(off a stock euro contour i believe), flowed 210cc, which is 20.0 lb/hr
SO....this means that theres something special about this car because at 173whp, nader's car went down to low 12:1 a/f all the way to 7500rpm with the green, 20lb/hr injectors
Every formula i use and do, even at the extremes, says NO way will they support that power, at least 25lb injectors are necessary.
Does this mean the car is just runing at over 100% duty cycle?
For this to work, the formula gives me a BSFC of about .35, which should be impossible on a NA car, it has to be around .45-.50
Guys, WTF is going on? How is the car possibly getting enough fuel? I will be testing my duty cycle today finally with the scanner.
His car also hit 4.15volts, so theres plenty of MAfS to go, but it seems like the car is somehow sqeezing more fuel through those injectors then physically possible.
Anyone have any idea as far as whats going on? Is it possible for the computer to run the injectors at more than 100% duty cycle?
The formula does say however that if you run it at 110% duty cycle, with pressure of 43psi(what is the stock fuel presure at the rail BTW??) it will only need 20.3lb/hr injectors to support 170whp
So is the ecu just forcing more than 100% duty cycle through the injectors?? If so, how bad is that?
WHAT IS THE PSI at the fuel rail on a focus???
[ 10-18-2002, 03:50 PM: Message edited by: nazthug ]